Lawn sprinkler



F c cooMBs 2,535,723

LAWN SPRINKLER Flled June 14, 1948 /2/0r7 Freda "60% C: [amba i 3 Q? fife v4.44

Dec. 26, 1950 Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE LAWN SPRINKLER Frederick C. Coombs, Miami, Fla.

Application J line 14, 1948, Serial No. 32,750

1 Claim. (Cl.,299--76) This invention relates to lawn sprinklers and more particularly it relates to a sprinkler having an anchoring spike which may be thrust into the ground to hold the sprinkler in a upright position.

One object of this invention is to provide a deflector-head-carrying stem adjustable lengthwise of itself to vary the size of the mouth of the discharge opening whereby to obtain a wide distribution of spraya heavy spray or a light one.

Another object is to provide threaded means that may be screwed up against the head-carrying-stem to lock it in any adjusted position.

Another object is to provide an anchoring spike threaded at one end and adapted to be screwed up against the end of the hcad-carrying-stem whereby to lock it in any adjusted position.

With these and other objects and advantages in view, this invention consists in the several novel features of construction, arrangement and combination of parts hereinafter fully described and more particularly defined in the appended claim.

The invention is clearly illustrated in the drawing accompanying this specification in which;

Fig. 1 is a side elevation of a lawn sprinkler embodying a simple form of this present invention,

Fig. 2 is a central vertical longitudinal section through the same, and

Fig. 3 is a horizontal section taken on the line 3-3 of Fig, 2.

Referring to said drawing, the reference character 5 designates a chambered body formed on one side with a threaded boss 6 to which a garden hose may be secured by a conventional hose coupling. The hollow of the boss opens to a cavity '1 in the body and the latter is formed with a tubular upstanding portion 8, the hollow of which communicates with the cavity 7. The upper end of the tubular portion is drawn in or tapered slightly in venturi shape as seen at 9, and on its extreme end is a tapered seat I which surrounds the discharge opening of the tubular portion 8. p A deflector head ii is provided exteriorily of the tubular portion and its lower face is slightly tapered or flat ccned shaped as at i2 for deflecting the discharging water in a slightly upward direction. The head may be knurled or otherwise treated to facilitate turning the same.

Secured to and depending from the head is a head-carrying-stem it, which projects down through the hollow of the tubular portion and is threaded at its lower end as at M for engagement with the threads l of a bore 16 formed in the body in coaxial alignment with the stem. The

body is formed with a boss I! on its lower end through which the bore it is extended and con tains a continuation of the threads l5.

Threadedly mounted in the body as for instance, in the threaded bore It is a threaded spike which may be in the form of a rod it, which may be screwed up against the head-carrying-stem to lock it in any place of adjustment, whereby any likelihood for the deflector head to turn and vary the adjustment is prevented.

As shown the threaded rod I 3 is in the form of a pointed anchoring rod which may be thrust into the ground to support the sprinkler in upright position.

In use an attendant may adjust the deflector head to vary the width of the annular discharge mouth at the discharge opening by turning the head in the proper direction thereby screwing the stem up or down in the threaded bore Hi. When the head has been properly adjusted the threaded rod 58 is screwed up against the head-carryingstem, thereby locking the same and the head in adjusted position.

If desired the body may be formed with a bulbous portion is in coaxial alignment with the axis of the threaded boss 6, which portion I 9 may be provided with intersecting ribs or wings 2%] for the purpose of strength and appearance. The anchoring rod may be knurled as at 2|, to enable it to be tightly gripped by a pair of pliers or other tool when screwing it against the head-carryingstem.

I have found that the venturi shape outlet of the tubular portion, combined with the flat cone shape of the lower side of the head will accomplish even distribution of water over a wide area. Although particular mention has been made of the use of this device as a lawn sprinkler, it may be used in truck gardens, as the adjustment of the head permits discharge of the water in a fine spray almost approximating a fog mist.

Iaving thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention; hence, I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

A sprinkler comprising a body having an up standing, hollow, tubular portion, said tubular portion having an axially positioned discharge opening in the upper end thereof, said body being formed with a cylindrical boss, the axis of which extends transversely to and intersects the axis of said tubular portion, saidboss having an internally threaded bore communicating with the interior of said tubular portion and the discharge opening therein, said body having a second internally threaded bore axially aligned with the axis of saidtubular portion, a deflector head having an inverted, conical-shaped face positioned adjacent said discharge opening, a stem rigidly secured to said head and depending therefrom through said tubular portion, the lower end of said stem having external threads thereon posi tioned in engagement with the threads of said Second bore, rotation of said head and stem relative to the'body providing vertical adjustment whereby the head may be raised and lowered with respect to the upper end of said tubular portion, and a supporting rod for said body having external threads at one end thereof engageable with the threads of said second bore, the upper end of said supporting rod being adapted to be engaged with the lower end of said stem to lock the latter against rotation.

FREDERICK C. COOMBS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date 36,181 Trowbridge Aug. 12, 1862 523,941 North et a1 July 31, 1894 650,627 Anderso May 29, 1900 1,634,261 Knauff July 5, 1927 1,731,555 Williams Oct, 15, 1929 1,767,028 Williams June 24, 1930 1,913,278 Ivey June 6', 1933 FOREIGN PATENTS 20 Number Country Date 513,411 Germany Nov. 27, 1930 

